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The radiation resistance of an antenna having a power of 120 units and antenna current of 5A is
- a)4.8
- b)9.6
- c)3.6
- d)1.8
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The radiation resistance of an antenna having a power of 120 units and...
Answer: a
Explanation: The power of an antenna is given by Prad = Ia2 Rrad, where Ia is the antenna current and Rrad is the radiation resistance. On substituting the given data, we get Rrad = Prad/Ia2 = 120/52 = 4.8 ohm.
Explanation: The power of an antenna is given by Prad = Ia2 Rrad, where Ia is the antenna current and Rrad is the radiation resistance. On substituting the given data, we get Rrad = Prad/Ia2 = 120/52 = 4.8 ohm.
Most Upvoted Answer
The radiation resistance of an antenna having a power of 120 units and...
Radiation Resistance of an Antenna
In order to understand the radiation resistance of an antenna, let's first define what radiation resistance is. Radiation resistance is a theoretical resistance that represents the power radiated by an antenna, assuming all the power is radiated and none is lost in other forms of energy.
Given Data:
- Power of the antenna (P) = 120 units
- Antenna current (I) = 5 A
Calculating Radiation Resistance:
The radiation resistance (Rr) can be calculated using the formula:
Rr = (P/I^2)
Substituting the given values:
Rr = (120 / 5^2)
Rr = (120 / 25)
Rr = 4.8
Hence, the radiation resistance of the antenna is 4.8 units. Therefore, the correct answer is option 'A' (4.8).
Explanation:
- The power of an antenna represents the total power it can radiate. In this case, the power is given to be 120 units.
- The antenna current represents the current flowing through the antenna. Here, the antenna current is given as 5 A.
- The radiation resistance is calculated using the formula Rr = (P/I^2), where P is the power and I is the current.
- By substituting the given values in the formula, we can calculate the radiation resistance to be 4.8 units.
Summary:
The radiation resistance of an antenna with a power of 120 units and an antenna current of 5 A is 4.8 units. The radiation resistance represents the theoretical resistance that accounts for the power radiated by the antenna.
In order to understand the radiation resistance of an antenna, let's first define what radiation resistance is. Radiation resistance is a theoretical resistance that represents the power radiated by an antenna, assuming all the power is radiated and none is lost in other forms of energy.
Given Data:
- Power of the antenna (P) = 120 units
- Antenna current (I) = 5 A
Calculating Radiation Resistance:
The radiation resistance (Rr) can be calculated using the formula:
Rr = (P/I^2)
Substituting the given values:
Rr = (120 / 5^2)
Rr = (120 / 25)
Rr = 4.8
Hence, the radiation resistance of the antenna is 4.8 units. Therefore, the correct answer is option 'A' (4.8).
Explanation:
- The power of an antenna represents the total power it can radiate. In this case, the power is given to be 120 units.
- The antenna current represents the current flowing through the antenna. Here, the antenna current is given as 5 A.
- The radiation resistance is calculated using the formula Rr = (P/I^2), where P is the power and I is the current.
- By substituting the given values in the formula, we can calculate the radiation resistance to be 4.8 units.
Summary:
The radiation resistance of an antenna with a power of 120 units and an antenna current of 5 A is 4.8 units. The radiation resistance represents the theoretical resistance that accounts for the power radiated by the antenna.
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The radiation resistance of an antenna having a power of 120 units and antenna current of 5A isa)4.8b)9.6c)3.6d)1.8Correct answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2025 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about The radiation resistance of an antenna having a power of 120 units and antenna current of 5A isa)4.8b)9.6c)3.6d)1.8Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The radiation resistance of an antenna having a power of 120 units and antenna current of 5A isa)4.8b)9.6c)3.6d)1.8Correct answer is option 'A'. Can you explain this answer?.
The radiation resistance of an antenna having a power of 120 units and antenna current of 5A isa)4.8b)9.6c)3.6d)1.8Correct answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2025 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about The radiation resistance of an antenna having a power of 120 units and antenna current of 5A isa)4.8b)9.6c)3.6d)1.8Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The radiation resistance of an antenna having a power of 120 units and antenna current of 5A isa)4.8b)9.6c)3.6d)1.8Correct answer is option 'A'. Can you explain this answer?.
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