Electric Circuits Answers

A blender requires 350 W to power the rotating blades that chop food. If the blender has a resistance of 75, how much current passes through the blender’s circuit? What is the potential difference across the blender?

In a sample of pistons manufactured in a factory, it is seen that 10% of the pistons
are defective. What is the probability that in a batch of 10 pistons no more than two
pistons, are defective?

Determine the volume of a solid which is below the plane z = 8– 2x –3y and above the region R in the xy plane define by:
0 ≤ x ≤ 2; 0 ≤ y ≤ 1.

Using Gauss’ theorem calculate the flux of the vector field A = x³i + y³I + z³k
through the surface of a hemisphere of radius A which has the centre of its base at the
origin.

https://prnt.sc/su2cfr

Show that for any two vectors a and b
(a.b)² – [ (a × b ) × b ].a = a²b²

3 A of current is flowing in a long straight wire. A positive charge, q = 7 C is
moving parallel to the wire at a distance of 0.05 m with a velocity of 250 ms-1.
Calculate the magnitude of the magnetic field due to the flow of current in the
wire.

The area of each plate of a parallel plate capacitor is 0.03m2. The distance between the plates of the capacitor is 2×10-3m, and the potential difference between the plates is 150V. Calculate capacitance of the capacitor.

In Figure the resistances are R1 = 1.0 Ohm  and R2 = 2.0 Ohm, and the ideal batteries have emfs

E1=  2.0 V and
E2 =E3=  4.0 V.
What are the currents in battery 1, and in battery 2?

Two electric charges one 20 times as strong as the other, exert a force 2.45×10-2 on each other. When they are placed 10 cm apart in air, find the magnitude of each charge.