An inductor (l), a resistor (r), a battery (v), and a switch are all connected in a single loop series circuit. immediately after the switch is closed,
a. the current in the circuit is l/r.
b. the current in the circuit is zero because the inductor resists the change in its current state.
c. the current in the circuit is v/r.
d. the current in the circuit is zero because the circuit contains a resistor.

An inductor by design will resist a change in current by providing an opposing voltage. This makes it such that after the switch is closed, the current starts at 0 and you will have to wait some time until the circuit reaches its maximum current.

Choice B

(B)

Explanation:

The speed of the ejected electrons depends on the frequency of the incident radiation. The closer the energy of the incident photons to the work function of the metal, the slower is the speed of the ejected electrons. Intensity of the incident radiation has no effect on the speed of the ejected electrons, only its frequency.