Electrostatics And Current Electricity Mock Tests

A charge of +5 μC is placed at a distance of 0.3 m from a charge of -3 μC in air. The force between them is:

A slab having dielectric constant K = 3 is placed in a region having constant electric field E = 10 V/m. The electric field inside the slab volume is:

Three resistors of resistances 2 Ω, 3 Ω and 6 Ω are connected in parallel. The equivalent resistance is:

A copper wire of length 1 m and cross-sectional area 1 mm² has a resistance of 0.17 Ω. The resistivity of copper is:

A capacitor of capacitance C is charged to voltage V. If the voltage is doubled, the energy stored becomes:

Three resistors of 2 Ω, 3 Ω and 6 Ω are connected in parallel. The equivalent resistance is:

A parallel plate capacitor is connected to a battery supplying constant voltage difference such that it accumulates charge Q. While being connected, if the separation d between the plates is increased:

Three capacitors of capacitances 2 μF, 3 μF and 6 μF are connected in parallel. The equivalent capacitance is: