Two metal wires of identical dimensions are connected in series. If σ₁ and σ₂ are
Two metal wires of identical dimensions are connected in series. If σ₁ and σ₂ are the conductivities of the metal…
6 years ago
Current Electricity
A potentiometer wire of length L and a resistance r are connected in series with
A potentiometer wire of length L and a resistance r are connected in series with a battery of e.m.f. E₀…
6 years ago
A circuit contains an ammeter, a battery of 30 V and a resistance 40.8 ohm
A circuit contains an ammeter, a battery of 30 V and a resistance 40.8 ohm all connected in series. If…
6 years ago
Across a metallic conductor of non-uniform cross-section, a constant potential
Across a metallic conductor of non-uniform cross-section, a constant potential difference is applied. The quantity whilch remain (s) constant along…
6 years ago
A,B and C are voltmeters of resistance R, 1.5 R and 3R respectively, as shown
A,B and C are voltmeters of resistance R, 1.5 R and 3R respectively, as shown in the figure. When some…
6 years ago
A potentiometer wire has length 4m resistance 8Ω. The resistance that must be connected
A potentiometer wire has length 4m resistance 8Ω. The resistance that must be connected in series with the wire and…
6 years ago
Two cities are 150 km apart. Electric power is sent from one city to another city
Two cities are 150 km apart. Electric power is sent from one city to another city through copper wires. The…
6 years ago
The resistance in the two arms of the meter bridge are 5Ω and RΩ, respectively
The resistance in the two arms of the meter bridge are 5Ω and RΩ, respectively. When the resistance R is…
6 years ago
In an ammeter, 0.2% of main current passes through the galvanometer
In an ammeter, 0.2% of main current passes through the galvanometer. If resistance of galvanometer is G, then the resistance…
6 years ago
A potentiometer circuit has been set up for finding the internal resistance of a given
A potentiometer circuit has been set up for finding the internal resistance of a given cell. The main battery, used…
6 years ago