When a student connects a voltmeter as shown, it measures 6 V. If he connects a resistance of 4 Ω in series with the 2 Ω without changing the connection of voltmeter, the reading of voltmeter would be A) 6V
B) 1V
C) 3V

What do radio waves and microwaves have in common? both are at the side of the spectrum that has the shortest wavelengths. both are at the side of the spectrum that has the lowest radiant energy. both are at the side of the spectrum that has the lowest frequency. both are found next to visible light on the electromagnetic spectrum.

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

What happens when a rubber rod is rubbed with a piece of fur?