A 1.5V potential difference is established across a 200 cm long, 1.0 mm diameter nichrome wire by connecting it to the terminals of a 1.5V battery. What the current in the wire? `rho`=`1.5xx10^(-6)Omega m` for nichrome:-

A wire of 50 cm long, 1mm^(2) in cross-section carries a current of 4 A, when connected to a 2 V battery, the resistivity of wire is

A wire of 50 cm long, 1mm^(2) in cross-section carries a current of 4 A, when connected to a 2 V battery, the resistivity of wire is

A loud of 10 kg stretches a wire 5 m long und 1 mm diameter by 0.3 mm. Find Young.s modulus of the material of the wire and energy stored in the wire.

When 5 V potential difference is applied across a wire of length 0.1 m, the drift speed of electrons is 2.5 xx 10^(-4) ms ^(-1) . If the electron density in the wire is 8 xx 10^(28) m^(-3) , the resistivity of the material is close to :

The potential difference across the terminals of a battery is 8.4 V when there is a current of 1.50 A in the battery from the negative to the positive terminal. When the current is 3.50 Air , the reverse direction, the potential difference becomes 9.4 V . (a) What is the internal resistance of the battery? (b) What is the emf of the battery?

A voltmeter having a resistance of 1800 Omega employed to measure the potential difference across a 200 Omega resistor which is connected to the terminals of a dc power supply having an emf of 50 V and an internal resistance of 20 Omega . What is the percentage decrease in the potential difference across the 200 Omega resistor as a result of connecting the voltmeter across it?

A 5 V battery of negligible internal resistance is connected across a 200 V battery and a resistance of 39 Omega as shown in the figure. Find the value of the current.

The potential difference across the terminals of a battery is 10 V when there is a current of 3 A in the battery from the negative to the positive terminal. When the current is 2A in the reverse direction, the potential difference becomes 15 V. The internal resistance of the battery is

A 1m long wire of diameter 0.31mm has a resistance of 4.2 Omega . If it is replaced by another wire of same material of length 1.5m and diameter 0.155 mm , then the resistance of wire is

A 10 V battery of negilgible internal resistance is connected across a 200V battery and a resistance of 38 Omega as shown in figure. . Find the value of current in the circuit.