Kenya KCSE · Physics
Electricity and magnetism
9 practice questions, each with the answer and an explanation.
Practise Electricity and magnetism now
Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.
All 9 questions
- A 12 V battery drives a current of 3 A through a resistor. What is the resistance?
- Two resistors of 6 ohms and 3 ohms are connected in parallel. What is their combined resistance?
- An electric kettle rated 2000 W is used for 3 minutes. How much electrical energy does it use?
- A 60 W bulb is used for 5 hours a day. If electricity costs KSh 20 per kWh, what is the cost of using the bulb for 10 days?
- A transformer has 200 turns on its primary coil and 50 turns on the secondary coil. If the input voltage is 240 V, what is the output voltage?
- Which device converts mechanical energy into electrical energy?
- The fuse in a plug is connected in the
- Which of the following materials is most suitable for making a permanent magnet?
- Three identical 2 ohm resistors are connected in series to a 12 V supply. What is the current?
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