Electricity And Magnetism - Study Mode

[#126] Who among the following introduced the concept of electric field for the first time?
Correct Answer

(B) Michael Faraday

[#127] The two resistance of 10Ω and 20Ω in series combination are connected with 6V batteries. The electric current in the circuit will be-
Correct Answer

(A) 0.2 A

[#128] Which one of the following physical quantities does not affect the resistance of a cylindrical resistor?
Correct Answer

(A) The current through it

[#129] The basic difference between an AC generator and a DC generator is that
Correct Answer

(B) AC generator has slip rings while the DC generator has a commutator

[#130] Which of the following devices detects the current in the circuit?
Correct Answer

(A) galvanometer