A transformer has a primary coil of 1500 turns and a secondary coil of 150 turns. The primary coil is connected to an alternating current (a.c.) power supply where the root-mean-square (rms) voltage VrmsV_{\text{rms}}Vrms is 120 V. The secondary coil is connected to a resistor of resistance 12 Ω. The transformer is 100% efficient. What is the peak power dissipated in the resistor?
6.0 W6.0\text{ W}6.0 W
12 W12\text{ W}12 W
24 W24\text{ W}24 W
48 W48\text{ W}48 W
66 exam-style questions on AQA A Level Physics Magnetic fields (A-level only), covering Magnetic flux density (A-level only), Moving charges in a magnetic field (A-level only), Magnetic flux and flux linkage (A-level only), Electromagnetic induction (A-level only), Alternating currents (A-level only), and The operation of a transformer (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.