In a given circuit, the supplied voltage is 1.5 volts. one resistor is 3 ohms and the other is 2 ohms. use ohm's law to determine the current in the circuit.
0.3 amps
1.5 amps
7.5 amps
3.3 amps

the purpose of a fuse or circuit breaker is
to speed up the current
to slow down the current
to stop current that is flowing too fast
to stop current that is flowing too slow

(1) The value of the current depends upon how they are connected.

When placed in series:

The resistance would be: 3+2=5ohms.

Ohm's law is given as:

⇒

When placed in parallel:

The resistance would be:

Now, the current would be:

(2) The purpose of a fuse or circuit breaker is to stop current that is flowing too fast.

A fuse is wire that have  low melting point when placed in a circuit. When current is moving too fast i.e. in case of over current, the heat produced melts this wire which further breaks  the circuit. Similarly a circuit breaker is a switch which opens up in case of over flow of current.

Thus, a circuit breaker is then used to to stop current that is flowing too fast.

it would stay the same