Number of Questions: 4
Full Marks: 5
Duration: 45 minutes
An air-filled parallel plate capacitor uses square plates. Each plate has a side of length 12.0 cm. Determine the gap d required to obtain a capacitance of 260 pF.
Use ε0 = 8.8541878128 × 10−12 F⋅m−1. Neglect fringing fields.
A circular coil of radius 12.0 cm is on the x-y plane, with the origin at its centre. It has 100 turns and carries a current of 2.5 A. There is no magnetic material near the coil.
At 20 °C, a metal wire resistor has a resistance of 100 Ω.
The material used for the wire has α = 5.2 ×
10−3 °C−1.
Determine the temperature if the measured resistance is 104.5 Ω.
In the Wheatstone bridge network shown,
VB = 5 V, R1 = 107 Ω, R2 = 106 Ω, R3 = 100 Ω, and R4 = 100 Ω.
Determine Vo.