Gap between two electrodes of the spark-plug used in an automobile engine is 1.25 mm. If the potential of 20 V is applied across the gap, what will be the magnitude of electric field between the electrodes?

Two plates are 1.5 cm apart, and a potential difference of 7.5 volt is applied between them, the electric field between the plates is

The plates of a parallel plate capacitor have an area of 90 cm^2 each and are separated by 2.5 mm. The capacitor is charged by connecting it to a 400 V supply, View this energy as stored in the electrostatic field between the fields, and obtain the energy per unit volume u .Hence ,arrive at a relation between u and the magnitude of electric field E between the plates . Electrostatic energy = 2.22xx 10^-6 J

An air capacitor of capacity 50 mu F is charged to a potential of 200 V. The area of each plate is 20 cm^2 and the distance of separation between the plates is 0.1 mm, find the energy per unit volume of the electric field between the plates of the capacitor .

Determine the current that will flow when a potential difference of 33 V is applied between two ends of an appliance having a resistance of 110Omega . If the same current is to flow through an appliance having a resistance of 500Omega , how much potential difference should be applied across its two ends?

Determine the current that will flow when a potential difference of 44 V is applied between two ends of an appliance having a resistance of 110 Omega . If the same current is to flow through an appliance having a resistance of 600 Omega , how much potential difference should be applied across its two ends?

A steel wire of diameter d=1.0mm is stretched horizontally between two clamps located at the distance l=2.0m from each other. A weight of mass m=0.25kg is suspended from the mid-point O of the wire. What will the resulting descent of the point O be in centrimetres?

A current of 0.24 A flows through a conductor when a potential difference of 24 V is applied between its two ends. What is its resistance?

A potential difference of 5000 volt is applied between two parallel plates 5cm apart a small oil drop having a charge of 9.6 xx 10^-19 C falls between the plates. Find (a) electric field intensity between the plates and (b) the force on the oil drop.