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According to Ohm's law
  • a)
    The electric current I flowing through a substance is proportional to the square of voltage V across its ends
  • b)
    The electric current I flowing through a substance is proportional to the voltage V across its ends
  • c)
    The electric current I flowing through a substance is inversely proportional to the voltage V across its ends
  • d)
    The electric current I flowing through a substance is independent of the voltage V across its ends
Correct answer is option 'C'. Can you explain this answer?
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According to Ohm's lawa)The electric current I flowing through a s...
Ohm’s Law
The current that flows through most substances is directly proportional to the voltage V applied to it. The German physicist Georg Simon Ohm (1787–1854) was the first to demonstrate experimentally that the current in a metal wire is directly proportional to the voltage applied:

I∝V.

This important relationship is known as Ohm’s law. It can be viewed as a cause-and-effect relationship, with voltage the cause and current the effect. This is an empirical law like that for friction—an experimentally observed phenomenon. Such a linear relationship doesn’t always occur.
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According to Ohm's lawa)The electric current I flowing through a s...
Ohm's law is a basic principle of electricity that describes the relationship between voltage, current, and resistance in an electrical circuit. It states that the electrical current(I) flowing in a circuit is directly proportional to the voltage(V) and inversely proportional to the resistance(R). This means that if the voltage across a circuit is increased, the current will also increase, but if the resistance is increased, the current will decrease.

The formula for Ohm's law is I = V/R, where I is the current, V is the voltage, and R is the resistance. This formula shows that the current in a circuit is directly proportional to the voltage and inversely proportional to the resistance.

Explanation of options:

a) The electric current I flowing through a substance is proportional to the square of voltage V across its ends - This statement is incorrect. The current in a circuit is directly proportional to the voltage, not the square of the voltage.

b) The electric current I flowing through a substance is proportional to the voltage V across its ends - This statement is partially correct. The current in a circuit is directly proportional to the voltage, but it is also inversely proportional to the resistance.

c) The electrical current(I) flowing in a circuit is proportional to the voltage(V) and inversely proportional to the resistance(R) - This statement is correct. Ohm's law states that the current in a circuit is directly proportional to the voltage and inversely proportional to the resistance.

d) The electric current I flowing through a substance is independent of the voltage V across its ends - This statement is incorrect. The current in a circuit is directly proportional to the voltage, as stated in Ohm's law.

Conclusion:

Ohm's law is a fundamental principle of electricity that describes the relationship between voltage, current, and resistance in a circuit. It states that the current in a circuit is directly proportional to the voltage and inversely proportional to the resistance. This law is essential in understanding how electricity flows through a circuit and is used in many applications, including electronics and power generation.
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According to Ohm's lawa)The electric current I flowing through a s...
Ohm's law states that the electrical current (I) flowing in an circuit is proportional to the voltage (V) and inversely proportional to the resistance (R). Therefore, if the voltage is increased, the current will increase provided the resistance of the circuit does not change.
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According to Ohm's lawa)The electric current I flowing through a substance is proportional to the square of voltage V across its endsb)The electric current I flowing through a substance is proportional to the voltage V across its endsc)The electric current I flowing through a substance is inversely proportional to the voltage V across its endsd)The electric current I flowing through a substance is independent of the voltage V across its endsCorrect answer is option 'C'. Can you explain this answer?
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