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Case Based Questions Test: Electricity - 2 - Class 10 MCQ


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15 Questions MCQ Test Physics for Class 10 - Case Based Questions Test: Electricity - 2

Case Based Questions Test: Electricity - 2 for Class 10 2024 is part of Physics for Class 10 preparation. The Case Based Questions Test: Electricity - 2 questions and answers have been prepared according to the Class 10 exam syllabus.The Case Based Questions Test: Electricity - 2 MCQs are made for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Case Based Questions Test: Electricity - 2 below.
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Case Based Questions Test: Electricity - 2 - Question 1

Find out the following in the electric circuit given in the figure. Answer the questions:

Effective resistance of two 8 Ω resistors in the combination.

Detailed Solution for Case Based Questions Test: Electricity - 2 - Question 1
1/R = 1/8 + 1/8 = 2 / 8

R = 4Ω

Case Based Questions Test: Electricity - 2 - Question 2

Find out the following in the electric circuit given in the figure. Answer the questions:

Power dissipated in 4 Ω resistor

Detailed Solution for Case Based Questions Test: Electricity - 2 - Question 2
Power dissipated in 4Ω = P P = VI = 4V × 1A = 4 watt
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Case Based Questions Test: Electricity - 2 - Question 3

Find out the following in the electric circuit given in the figure. Answer the questions:

Current flowing through a 4 Ω resistor.

Detailed Solution for Case Based Questions Test: Electricity - 2 - Question 3
Current flowing through the circuit = Current flowing through 4 Ω Equivalent resistance of the circuit = 4Ω + 4Ω = 8Ω

Current flowing in the circuit = V /R = 8V/8Ω = 1A

Case Based Questions Test: Electricity - 2 - Question 4

Find out the following in the electric circuit given in the figure. Answer the questions:

Difference in reading of ammeter A1 and A2

Detailed Solution for Case Based Questions Test: Electricity - 2 - Question 4

There is no difference in the readings of ammeters A1 and A2 as same current flows through all elements in a series curcuit.

Case Based Questions Test: Electricity - 2 - Question 5

Find out the following in the electric circuit given in the figure. Answer the questions:

Potential difference across 4 Ω resistor

Detailed Solution for Case Based Questions Test: Electricity - 2 - Question 5
Potential difference across 4Ω = V1 V1= IR1

V1 = 1A × 4Ω = 4V

Case Based Questions Test: Electricity - 2 - Question 6

Two conductors A and B of resistances 5 Ω and 10 Ω respectively are first joined in parallel and then in series. In each case the voltage applied is 20 V. Answer the questions:

In which arrangement will the current through A and B be the same ?

Case Based Questions Test: Electricity - 2 - Question 7

Two conductors A and B of resistances 5 Ω and 10 Ω respectively are first joined in parallel and then in series. In each case the voltage applied is 20 V. Answer the questions:

Draw the circuit diagram to show connection when A and B are joined in parallel?

Detailed Solution for Case Based Questions Test: Electricity - 2 - Question 7
Correct circuit diagram
Case Based Questions Test: Electricity - 2 - Question 8

Two conductors A and B of resistances 5 Ω and 10 Ω respectively are first joined in parallel and then in series. In each case the voltage applied is 20 V. Answer the questions:

Equivalent resistance in series combination is:

Detailed Solution for Case Based Questions Test: Electricity - 2 - Question 8
5 + 10 = 15 Ω
Case Based Questions Test: Electricity - 2 - Question 9

Two conductors A and B of resistances 5 Ω and 10 Ω respectively are first joined in parallel and then in series. In each case the voltage applied is 20 V. Answer the questions:

Equivalent resistance in parallel combination is:

Detailed Solution for Case Based Questions Test: Electricity - 2 - Question 9

(ii) The voltage across A and B will be the same in a parallel arrangement.

(iii) Current in A and B will be same in a series arrangement.

Case Based Questions Test: Electricity - 2 - Question 10

Two conductors A and B of resistances 5 Ω and 10 Ω respectively are first joined in parallel and then in series. In each case the voltage applied is 20 V. Answer the questions:

Q. In which combination will the voltage across the conductors A and B be the same ?

Detailed Solution for Case Based Questions Test: Electricity - 2 - Question 10
(i) Voltage across A and B will be the same in parallel arrangement.

Fig. Parallel arrangement

Case Based Questions Test: Electricity - 2 - Question 11

Study the circuit shown in which three identical bulbs B1, B2 and B3 are connected in parallel with a battery of 4.5 V. Answer the questions:

Q. What will happen to the other two bulbs if the bulb B3 gets fused ?

Case Based Questions Test: Electricity - 2 - Question 12

Study the circuit shown in which three identical bulbs B1, B2 and B3 are connected in parallel with a battery of 4.5 V. Answer the questions:

How many resistors of 88 W are connected in parallel to carry 10 A current on a 220 V line:

Detailed Solution for Case Based Questions Test: Electricity - 2 - Question 12

Equivalent resistance,= 1 / Rp = n / 88

Rp = 88 / n

V = IR

R = 88 / n

88 /n = 220 / 10

n= 4 resistors

Case Based Questions Test: Electricity - 2 - Question 13

Study the circuit shown in which three identical bulbs B1, B2 and B3 are connected in parallel with a battery of 4.5 V. Answer the questions:

If the wattage of each bulb is 1.5 W, how much readings will the ammeter A show when all the three bulbs glow simultaneously.

Detailed Solution for Case Based Questions Test: Electricity - 2 - Question 13
When the bulbs are in parallel, wattage will be added (4.5 W) and the ammeter reading would be,

Case Based Questions Test: Electricity - 2 - Question 14

Study the circuit shown in which three identical bulbs B1, B2 and B3 are connected in parallel with a battery of 4.5 V. Answer the questions:

Find the statement which does not justify parallel connection:

Detailed Solution for Case Based Questions Test: Electricity - 2 - Question 14
There is a path of flow of electrons through each resistor. So there are several paths.
Case Based Questions Test: Electricity - 2 - Question 15

Study the circuit shown in which three identical bulbs B1, B2 and B3 are connected in parallel with a battery of 4.5 V. Answer the questions:

Find the total resistance of the circuit:

Detailed Solution for Case Based Questions Test: Electricity - 2 - Question 15
Ammeter reading = 1.0A

V = 4.5V

R = V/I

= 4.5 = 4.5 Ω

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