Your hair dryer has a resistance of 9.6 Ω and you plug it into the bathroom outlet. Assume household voltage to be 120 V and that different parts of your house are connected in parallel. a) What current will it draw?
b) Suppose your brother has an identical hair dryer and plugs it into the same part of the circuit. What current will the two hair dryers draw?
c) If the maximum current the circuit breaker in the system can handle is 20 A, what do you think will happen?

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.