In an a. c generator, coil of N turns and area A is rotated at ω radians per second in a uniform magnetic field B. Deduce an expression for an emf ε induced in it. Assume that the maximum emf is ε0. Plot the variation of induced emf with time.

Which terms describe the purpose of antennas on devices that use radio waves? transmit and receivemodify and amplifyamplify and receivemodify and transmit

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.