B1, b2, and b3 are three identical bulbs as shown. when all the three bulbs glow, a current of 3a is recorded in ammeter a. what happens to the glow of the other two bulbs when bulb b1 gets fused? what happens to the reading of ammeter a1, a2 and a3 and a when the bulb b2 gets fused? how much power is dissipated in the circuit when all the three bulbs glow together?

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.