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In the tutorial, batteries A and B were identical. In this problem, you will consider two cases in which they are not.
1.)
a.)
Suppose that the absolute value of the potential difference across battery B were reduced, but battery A is unchanged.
When the switch is closed, would bulb 12 light? Explain your reasoning.
b.)
If you believe that bulb 12 would light when the switch is closed, draw an arrow on the diagram at right to indicate the direction of the current through it. Explain your reasoning.
c.)
When the switch is closed, would bulb 11 be brighter than, dimmer than, or as bright as it was in the tutorial? Explain.
2.)
a.)
Suppose instead that the absolute value of the potential difference across battery A were reduced, but battery B were unchanged.
When the switch is closed, would bulb 12 light? Explain your reasoning.
b.)
If you believe that bulb 12 would light when the switch is closed, draw an arrow on the diagram at right to indicate the direction of the current through it. Explain your reasoning.
c.)
When the switch is closed, would bulb 11 be brighter than, dimmer than, or as bright as it was in the tutorial? Explain.
Explanation / Answer
Answer 1: a) yes bulb 12 light, because it(bulb) withdraw current from both battries.
b) if switch is closed then both the battries connected in parallel witch means equal current flow in circuit and both a and b light and direction of current will be clockwise in circuit A and anti clockwise in circuit B
c) bulb 11 is as brighter as tutorial, because battery A is always connected with left circuit(either switch is closed or open) and current aiways flows in closed circuit.
Answer 2: a) If battery B is unchanged and switch is closed then bulb 12 light, because if circuit is completed then bulb easily receive current from battery.
b) direction of current is always from positive to negative and in circuit 1st current flows clockwise and in circuit 2nd current flows anti-clockwise, if circuit is closed.
c)If switch is closed bulb 11 is as brighter as tutorial, if circuit is open then bulb 11 is dimnised as compare to tutorial. In closed circuit current balanced by battery A and B as they connected in parallel.
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