Potentiometer measures the potential difference more accurately than a voltmeter
Potentiometer measures the potential difference more accurately than a voltmeter because Options (a) it does not draw current from external…
7 years ago
Current Electricity
Resistances n, each r Ω, when connected in parallel give an equivalent resistance
Resistances n, each r Ω, when connected in parallel give an equivalent resistance of R Ω. If these resistances were…
7 years ago
In potentiometer experiment, a cell of emf 1.25V gives balancing length of 30 cm
In potentiometer experiment, a cell of emf 1.25V gives balancing length of 30 cm. If the cell is replaced by…
7 years ago
The electric resistance of a certain wire of iron is R. If its length and radius
The electric resistance of a certain wire of iron is R. If its length and radius are both doubled, then…
7 years ago
An electron in potentiometer experiences a force 2.4×10⁻¹⁹N. The length of potentiometer
An electron in potentiometer experiences a force 2.4x10⁻¹⁹N. The length of potentiometer wire is 6m. The emf of the battery…
7 years ago
Kirchoff’s I law and II laws of electricity prove respectively the
Kirchoff's I law and II laws of electricity prove respectively the Options (a) Conservation of charge and energy (b) Conservation…
7 years ago
In Wheatstone bridge, three resistors P,Q and R are conncected in three arms
In Wheatstone bridge, three resistors P,Q and R are conncected in three arms in order and 4th arm of resistance…
7 years ago
Three unequal resistors in parallel are equivalent to a resistance 1 Ω.
Three unequal resistors in parallel are equivalent to a resistance 1 Ω. If two of them are in the ratio…
7 years ago
Two resistors of resistances 2Ω and 6Ω are connected in parallel.
Two resistors of resistances 2Ω and 6Ω are connected in parallel. This combination is then connected to a battery of…
7 years ago
The current in a conductor varies with time t as I=2t+3t² Where I is in amperes
The current in a conductor varies with time t as I=2t+3t² Where I is in amperes and t in seconds.…
7 years ago