1.

If the amount of charge in 1 electron (elementary charge) isapproximately 1.6×10^−19 C, calculate the number ofelectrons passing a point in the wire in 20 minutes when thecurrent is 1.0A

		3.2 X 10−18
		1.92 X 10−17
		7.5 X  1020
		7.5 X  1021

2.

Three resistors: 10 ohms, 20 ohms and 40 ohms. If all three areconnected in parallel, how much is the equivalent resistor value ifreplaced with one resistor?  

		70 ohms
		5.7 ohms
		0.175 ohm
		35 ohms

3.

If a 4 µF capacitor has been fully charged by connecting with a1.5 volts battery, how much the charge amount on the capacitor inthe unit of coulomb (C) ?

		6 C
		2.67 C
		0.000006 C
		0.006 C
		0.6 C

4.

What is the maximum angle with which a light ray can incident ona glass-air interface and still refract? The index of refraction ofglass is 1.4 and is 1.0 for the air.

		30 degree
		38 degree
		41.8 degree
		45.6 degree

5.

In \"magnetic force on a current carrying wire\" experiment, usingthe data for force(y-axis, in Newton) versus length (in meters),someone obtained a linear curve fit equation: y=0.1x+2. If in theexperiment, the wire carrying a current I=2.0 A, how strong is themagnetic field?

		0.1 T
		0.05 T
		2 T
		0.2 T

6.

Two resistors are connected in parallel. What best describes thecurrents measured of each resistor?

		They will be equal, and will be the same as everywhere in thecircuit
		They will be proportional to the resistance, with the biggercurrent passing the bigger resistor
		They will be inversely proportional, with the bigger currentpassing the smaller resistor
		You cannot predict without seeing the circuit