Parallel circuits

The components of a system are :

• input

• process

• output

• input

  process

  output

The input and output energy of a motorised gate are :

• input : kinetic energy

  output: electrical energy

• input: electrical energy

  output: heat energy

• input: electrical energy

  output: kinetic energy

In parallel circuits, current has only pathway to take.

• True, only one pathway that current can take.

• False, more that one pathway that current can take.

In which street will traffic move easier ?

• Street A

• Street B

In which street will there be a higher total resistance?

• Street A

• Street B

Total current in a parallel circuit is equal to sum of currents of all bulbs/resistors. This can be represented by:

• A_t = A₁=A₂...

• A_t = A₁ + A₂..

• At = A1 + V2 + V3

IN the circuit alongside , bulb M is removed. Bulb L will______ _______

• stop glowing

• continue to glow

Using brightness of the bulbs as an indicator of current, describe the effect of adding more bulbs (resistors) in parallel. (select all that apply)

• More bulbs added in parallel means each bulb will now receive less current

• More bulbs added in parallel means each bulb will receive the same current as if it were the only bulb in the circuit

• Adding more bulbs in parallel will increase the TOTAL current of the circuit.

In a series circuit, total voltage is shared amongst the bulbs/resistors, while in a parallel circuit total voltage is the same throughout the circuit ( each bulb receives the full voltage)

• True

• False.