Electric Circuits Answers

A parallel-plate capacitor has an area of 100 mm² and the plates are separated by 100 μm . If the capacitor contains paper between the plates, what is its capacitance

A wheel rotating at 490 rev/min accelerate uniformly at 0.5 rad/s2 for 30 second.

1 .find the angular velocity after 30s

2 . pulley peripheral speed

3 . angle turned through by a wheel during this time

1.How much charge does a particle have if it's electric field intensity at a point 10.0cm away is 5.20x10³N/C?

2.The primary winding of a transformer has 1000 turns while it's secondary winding has 500 turns.

A. If the input voltage is 220V, what is the output voltage?

B. Suppose that the current in the secondary is winding is 0.5A, what current flows in the primary winding?

1. Two charges, +3.00mC and - 2.00mC, are separated by a distance of 5.00cm. What is the magnitude of the force they exert on each other? Is this repulsive of attractive?

2. An alpha particle moves 0.003m along the direction of an electric field of magnitude 1.00x104 N/C. An alpha particle has a charge of +2e and a mass of 6.68x10-²7 kg and e is equal to 1.60x10-¹9

A. What is the work done on the alpha particle?

B. If it was initially at rest, what is it velocity after moving 0.003m

A missile is launched on the earth with the initial velocity of 100ms-1 at an elevation of 30 degree s.calculate

1 greatest height attained

2 horizontal range

3 time of fright

4 velocity of a missile at time 8 second

A missile is launched on earth with the initial velocity of 100ms-1 at an elevation of 30 degrees.calculate

1 greatest height attained

2 horizontal range

3 time of fright

4 velocity of a missile at time 8 second

A proton makes a (radius = 30.0 cm) circular orbit in a 2.5 T magnetic field. What is the velocity of the proton?

mass of proton = 1.67x10^-27 kg, e = 1.602x10^-19 C

there is a potential difference of v = 20 V across a resistor with r = 50 ohms. what is the current through the resistor

A 12 ohm resistor is in series with an 8 ohm load. What is the total source voltage if the voltage across the 12 ohm resistor is 36 Volts?

1. A resistor R in series with an 8 ohms resistor is connected across a 60 V voltage source delivering 2.5 A of current. Find the value of resistor R.