calculate the internal resistance of the battery?
(circuit unhooked) EMF directly across the batt = 1.537
resistance = 5.3 ohms
Voltage= 1.40 V
current= .162 amps.
using a 1.5 Volts battery.
Can someone help please!!!!! :) thanx

Question

calculate the internal resistance of the battery? 
(circuit unhooked) EMF directly across the batt = 1.537 
resistance = 5.3 ohms
Voltage= 1.40 V
current= .162 amps.
using a 1.5 Volts battery. 
Can someone help please!!!!! :) thanx

anonymous · Answer

11.357

nick67 · Answer

@skhanal
could you better explain your data ?

anonymous · Answer

\[EMF =I ( R +Ri)\) there for answer is 0.85 ohms

anonymous · Answer

$$V=\epsilon-IR$$ => 1.537-0.162R=1.40
R=0.85 OHMS

anonymous · Answer

$$V=E-IR $$
V=1.4 V voltage across the battery 
I=0.162 current produced from the battery
R=? it's the internal resistance of the battery
E= 1.537V it's the EMF of the battery without the voltage drop on the  internal resistance
R=0.845 A