B: 5.0 A
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The diagram shows a circuit. What is the reading on the ammeter when the switch is open, and the reading when it is c…
The diagram shows a circuit. The lamp is a 12W lamp and is working at normal brightness. What are the readings on the…
A lamp rated 6 V, 2A is switched on for 60 s. How much energy is used?
The diagram shows the levels X and Y in a liquid manometer with the gas tap open. What is the pressure of the gas sup…
A parachutist has opened his parachute and is falling to Earth at constant speed. What is the principal energy conver…
A small emergency generator supplies 432 000 000 J of electrical energy in twenty-four hours. What is the average pow…