A student obtains resistances 3, 4, 12 and 16 Ohm using only two metallic resistors either separately or joined together. What is the resistance of each of the resistors?

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

A battery of e.m.f. 12 V and internal resistance 5Omega is connected to a resistor. If the current through the circuit is 0.3 A, what is the resistance of the resistor? What is the terminal voltage of the battery, when the circuit is closed?

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

Three resistors 1 Omega , 2 Omega and 3 Omega are combined in series. What is the total resistance of the combination?

Three resistors 1Omega , 2Omega and 3Omega are combined in series. What Is the total resistance of the combination?

Three resistors 2Omega , 4Omega and 5Omega are combined in parallel. What is the total resistance of the combination?

Four resistors of 12 Omega each are connected in parallel . Three such combinations are then connected in series. What is the total resistance ? If a battery of 9 V emf and negligible internal resistance is connected across the networks, find the current flowing through of each resistors.