Magnetic fields (A-level only)

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Question 30

Medium

A calibration test compares two electric heating elements. Element 1 has resistance $R\,$ and is operated by a direct current $I$ , dissipating a power $P$ .

Element 2 has a resistance of $2.5R\,$ and is operated by a sinusoidal alternating current with a peak current of $4 I$ .

What is the average power dissipated in Element 2?

$10 P$

$20 P$

$40 P$

$80 P$

Magnetic fields (A-level only)

Question 30

Magnetic fields (A-level only) Questions

Magnetic fields (A-level only)

Question 30

Magnetic fields (A-level only) Questions