![A 20 V battery of internal resistance $1\\Omega $ is connected to three coils of $12\\Omega ,6\\Omega ,\\,\\,{\\text{and }}4\\Omega $in parallel, a resistor of $5\\Omega $ and a reversed battery (EMF 8 A 20 V battery of internal resistance $1\\Omega $ is connected to three coils of $12\\Omega ,6\\Omega ,\\,\\,{\\text{and }}4\\Omega $in parallel, a resistor of $5\\Omega $ and a reversed battery (EMF 8](https://www.vedantu.com/question-sets/889f12b8-6968-4183-90ad-cc4e6cccbe937076393993790159448.png)
A 20 V battery of internal resistance $1\\Omega $ is connected to three coils of $12\\Omega ,6\\Omega ,\\,\\,{\\text{and }}4\\Omega $in parallel, a resistor of $5\\Omega $ and a reversed battery (EMF 8
![Physics Reference: A battery with e.m.f. E and internal resistance r is connected in series with a variable external resistor. Physics Reference: A battery with e.m.f. E and internal resistance r is connected in series with a variable external resistor.](https://1.bp.blogspot.com/-k_gSBGqr1wM/XHmBQmAZMvI/AAAAAAAAKIw/m8AgahEPIFYs0mj8Aaj6cwmp5_TDQQ0CwCLcBGAs/s1600/june2015p11q36-internal-resistance-variable-external.png)
Physics Reference: A battery with e.m.f. E and internal resistance r is connected in series with a variable external resistor.
![Physics Reference: Explain why the terminal potential difference (p.d.) of a cell with internal resistance may be less than the electromotive force ( e.m.f.) of the cell. Physics Reference: Explain why the terminal potential difference (p.d.) of a cell with internal resistance may be less than the electromotive force ( e.m.f.) of the cell.](https://1.bp.blogspot.com/-K3sQFib8uM4/W7z7QsxxfAI/AAAAAAAAJtg/hPMzJHVejLQjBvrpHzMvVu4Pnak5ECQfACLcBGAs/w1200-h630-p-k-no-nu/june2014p23q5-battery-internal-resistance.png)
Physics Reference: Explain why the terminal potential difference (p.d.) of a cell with internal resistance may be less than the electromotive force ( e.m.f.) of the cell.
![Part A What is the emf of the battery in the figure? Express your answer using two significant figures. Part B What is the internal resistance of the battery in the figure? Part A What is the emf of the battery in the figure? Express your answer using two significant figures. Part B What is the internal resistance of the battery in the figure?](https://homework.study.com/cimages/multimages/16/ele02458358822833292125053.png)
Part A What is the emf of the battery in the figure? Express your answer using two significant figures. Part B What is the internal resistance of the battery in the figure?
![A battery of emf `12V` and internal resistance `2 Omega` is connected two a `4 Omega` resi - YouTube A battery of emf `12V` and internal resistance `2 Omega` is connected two a `4 Omega` resi - YouTube](https://i.ytimg.com/vi/tPThojbnXFU/maxresdefault.jpg)