Five 18 Ω resistors are connected in series, and the combination is connected to a 38 V emf device. The thermal energy (in J) in any one of the resistors in one second is:

In the figure , the ideal batteries have emfs ε₁= 2.2 V , ε₂=1 V  and the resistances are R₁=3 Ω and R₂=5 Ω , the current in the circuit is :     

In the figure,  ε₁ = 12 V , ε₂=8.4 V , R₁=10 Ω, R₂=8 Ω , the current in R₂ is :

Resistances of 11 Ω, 22 Ω, and 33 Ω and a 31 V emf device are all in parallel. The current (in A) through the emf device is:

A certain capacitor, in series with a resistor, is being charged. At the end of 58 ms its charge is half the final value. The time constant (in ms) for the process is: 

An ordinary light bulb is marked " watt, volt". Its resistance is:

A metal  wire is long  and in diameter,  compute the resistance (in Ohm) if the resistivity of the metal is

What is the drift speed of the conduction electrons in a copper wire with radius 1.3 mm when it has a uniform current of 13 A? Given that the number of conduction electrons per unit volume is 8.49x10²⁸ m^-3 and the electron charge is 1.6x10^-19 C.

A wire with a length of and a radius of carries a current with a uniform current density of . The current (in ) is:

A steady current of   flows through a wire, how much charge (in coulomb)  passes through the wire in one minute?