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A circuit has a current of 5A and a resistance of 2Ω. What is the power consumed
A circuit has a current of 5A and a resistance of 2Ω. What is the power consumed in the circuit? (2020)
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Practice Questions
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Q1
A circuit has a current of 5A and a resistance of 2Ω. What is the power consumed in the circuit? (2020)
10W
25W
50W
100W
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Power (P) can be calculated using the formula P = I^2 * R = (5A)^2 * 2Ω = 25W.
Questions & Step-by-step Solutions
1 item
Q
Q: A circuit has a current of 5A and a resistance of 2Ω. What is the power consumed in the circuit? (2020)
Solution:
Power (P) can be calculated using the formula P = I^2 * R = (5A)^2 * 2Ω = 25W.
Steps: 7
Show Steps
Step 1: Identify the current (I) in the circuit, which is given as 5A.
Step 2: Identify the resistance (R) in the circuit, which is given as 2Ω.
Step 3: Use the formula for power (P), which is P = I^2 * R.
Step 4: Substitute the values into the formula: P = (5A)^2 * 2Ω.
Step 5: Calculate (5A)^2, which is 25A^2.
Step 6: Multiply 25A^2 by 2Ω to find the power: 25A^2 * 2Ω = 50W.
Step 7: The power consumed in the circuit is 50W.
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