PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

Book Free Demo
Compare the power used in the \(2\ Ω\) resistor in each of the following circuits:
(i) a \(6\ V\) battery in series with \(1\ Ω\) and \(2\ Ω\) resistors, and
(ii) a \(4\ V\) battery in parallel with \(12\ Ω\) and \(2\ Ω\) resistors.
  
(i) Potential difference \(=\) \(6\ V\)
 
The two resistors \(1\ Ω\) and \(2\ Ω\) are connected in series. Hence, the equivalent resistance is .
 
According to Ohm’s law, the current can be calculated using the formula
 
I=ii
 
On substituting the known values, we get .
 
The formula to calculate power is given as
 
PS=iii
 
On substituting the known values, the power consumed by \(2\ Ω\) resistor is .
 
(ii) Potential difference \(=\) \(4\ V\)
 
The power consumed by \(2\ Ω\) resistor is
 
PP=iii
 
On substituting the known values, the power consumed by \(2\ Ω\) resistor is . From both the circuits, it can be seen that \(2\ Ω\) resistors uses .