Electricity And Magnetism - Study Mode
[#321] Electric energy used in homes, industries, etc. is usually expressed as . . . . . . . .
Correct Answer
(A) in kilowatt hour
[#322] A wire with 11Ω resistance is doubled its radius. Calculate the new resistance of the wire.
Correct Answer
(B) 2.75 Ω
[#323] Often the use of current controller in electric circuits is to control . . . . . . . .
Correct Answer
(B) Resistance
[#324] The coil wire in the electric room heater or electric cooking heater is called . . . . . . . .
Correct Answer
(B) element
[#325] Dynamo is a machine which is used for.
Correct Answer
(C) Conversion of mechanical energy to electrical energy