Electric Circuits Answers

A proton accelerates from rest in a uniform electric field of 5NC^-1. At some time later it's speed is 1.2×10^6 ms^-1. What is the acceleration of the proton

The distance between the electrodes is 3.6 cm. If the dielectric strength of the dry air between the electrodes is 6 x106 V/m, what is the voltage across the electrodes when the arc first forms

The same resistors are arranged in series 3ohms,4ohms and 11ohms.What is the total resistance of the series combination

1. Two resistors, R₁ = 00 kΩ and R₂ = 3.00 kΩ, are connected in parallel and their combination is connected in series to a fully charged, 150-µF capacitor. When the switch is opened, the capacitor begins to discharged. What is the time constant for the discharge?  

A proton moves through a uniform magnetic field of magnitude 2.0 μT at a speed of 5.00x10^6 m/s.

(a) What is the magnitude of the maximum magnetic force it can experience?

(b) If the proton is replaced by an electron, will it experience the same maximum force?

Show by dimensional analysis that the product of resistance and capacitance has the dimension of time.

When a 12V battery (i.e. a battery of EMF 12V) is connected across a lamp with a resistance of 6.8 Ω the PD across the lamp is 10.2V. Find (a) the current through the lamp, (b) the internal resistance of the battery. 

A 2.0 microF capacitor is charged by a 12V battery. It is disconnected from the battery and connected to an uncharged 5.0 microF capacitor. Determine the total stored energy:

i. before the two capacitors are connected

ii. after they are connected

1. A battery with a terminal voltage of 12V is connected to a circuit consisting of four 10 and one 5 resistor all in series. Assume the battery has negligible internal resistance. Calculate the current through each resistor.

2. Calculate the RC time constant, τ of a circuit having a resistance of 15 MΩ and 3 010 𝜇𝐹.

3. An RC circuit have a 9 V source and lies at a 54-seconds of time constant. Then, find the voltage across the Capacitor after 153.6 seconds of charging.

Three 3.0ohms resistors are connected parallel. What is the equivalent resistance?