Assessment: Electromagnetic Induction, Generation and Distribution of Electricity

An AC supply has a peak voltage of 325 V. Find its RMS voltage, rounded to the nearest whole volt.

A loop of area 0.04 square metres sits perpendicular to a 0.6 T field. Find the magnetic flux.

A coil of 50 turns experiences a flux change of 0.03 Wb over 0.6 seconds. Find the magnitude of the induced EMF.

A transformer has 800 turns on its primary and 200 on its secondary, with 100 V applied to the primary. Find the secondary voltage.

A power station transmits 200000 W at 20000 V through a line of resistance 4 ohms. Find the power lost.

Five appliances draw 1 A, 2 A, 1.5 A, 0.5 A, and 3 A on the same household circuit. Find the total current drawn.

Why is it especially dangerous to use an electrical appliance with wet hands?

An induction cooktop heats a pan without an open flame. Which principle explains how it works?

A utility wants to reduce transmission power loss to one quarter of its current value, delivering the same power through the same line. By what factor should the voltage be increased?

A step-up transformer converts 400 V to 8000 V, with 50 turns on the primary. Find the number of turns on the secondary.