Electricity And Magnetism - Study Mode
[#156] At low temperature, lead behaves as a
Correct Answer
(B) super conductor
[#157] What is the resistance (in Ω) of an electrical component if a current of 0.2A passes through it on application of 8 V of potential difference across it?
Correct Answer
(A) 40
[#158] Factors affecting resistance of matter: 1. Temperature 2. Nature of substance 3. Conductor length 4. Area of transverse passage
Correct Answer
(A) 1, 2, 3 and 4
[#159] Electricity is produced through dry cell from
Correct Answer
(A) chemical energy
[#160] According to the Joule's law of heat, the heat generated in a circuit depends on some factors. Which of the following can be charged in this?
Correct Answer
(B) Current, resistance of conductor and time period for current to flow in it