Magnetic fields (A-level only)

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Question 12

Medium

An industrial thermal bath is designed to run using one of two alternative heating elements. Element 1 has a resistance $R\,$ and is powered by a direct current (DC) of constant value $I$ , dissipating a power $P$ . Element 2 has a resistance of $34R\displaystyle \frac{3}{4}R$ and is powered by an alternating current (AC) supply with a peak current of $2 I$ .

What is the mean power dissipated by Element 2 in terms of $P$ ?

$34P\frac{3}{4}P$

$32P\frac{3}{2}P$

$3 P$

$6 P$

Magnetic fields (A-level only)

Question 12

Magnetic fields (A-level only) Questions

Magnetic fields (A-level only)

Question 12

Magnetic fields (A-level only) Questions