An electric heater calibrated 1.5 kW, 230 V is connected to a household branch circuit having 5A fuse wire and is made to work. What will happen ?

A battery of emf 10V and internal resistance 3Omega is connected to a resistor.If the current in the circuit is 0.5A,what is the resistance of the resistor? What is the terminal voltage of the battery when the circuit is closed?

A long resistance wire is stretched between two iron nails. A battery of 2V is applied across the wire. One end of a torch bulb is connected to nail and other end is made in contact as shown in figure. - What happens to the reading, if we change 2V with 3V during the time of reading

A battery of e.m.f. 10V and internal resistance 3W is connected to a resistor. If the current in the circuit is 0.5A, what is the resistance of the resistor? What is the terminal voltage of the battery when the circuit is closed?

An electric heater working at 230 V produces 1000 J energy in one second. Calculate the heat generated by it when it works for 5 minute.

An electric heater working at 230 V produces 1000 J energy in one second. What is the power of the lamp ?

0.5 A current flows through an electric heating device connected to 230 V supply . How much is the power of heating device connecting to the circuit if we ignore the resistance of the circuit wire ?