Solution: We have potential difference (V) = 12V. A battery is connected across a series combination of two identical resistors. Answer. When a 40V battery is connected across an unknown resistor there is a current of 100 mA in the circuit. There is a pull-up 10k R47 to the +5V buss, then Q9 is used to regulate that feedback voltage mentioned above, the base is driven by IC3 pin 23. A 2A current flowing through a 15 ohm resistor produces 30V. Calculate the value of the resistance of the resistor. 6. Find the value of the resistance of the resistor. A battery has an emf of 9.00 V and an unknown internal resistance. So the answer is 30 volts. When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. The total resistance in the circuit is 20 ohms, so the current is 2A. b) When a 12V battery is connected across an unknown resistor, there is a current of 2.5mA in the circuit. Drop 0.6 across the diode and that puts T1 at 1.5 VDC; the ground reference is with respect to the Pack (-) connector terminal which is 2 FET Vds(ON) above the bottom of the Cells. Find the value of the resistance of the resistor. â´ Resistance = = = 4.8 x 10 3 Î©. If the external resistance is then changed to R2 = 7.00 ohms, what is â¦ Find the value of the resistance of the resistor. When the battery is connected across a resistor of resistance R1= 9.00ohms , the current in the circuit is I1= 1.00A . Q 8: When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. A battery of 6V is connected in series with resisters of 0.1 ohm , â¦ Find the value of the resistance of the resister: (a) 5000 Ω (b) 800 Ω (c) 0.8 Ω (d) none of these 10. Answer: a) Resistance of a conductor is the property of a conductor. 18 . A battery of 6V is connected in series with resisters of 0.1 ohm , 0.15 ohm,0.2 ohm,0.25 ohm and 6 ohm. When a 12 V battery is connected across an unknown resistor Question 8: When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. The current through the circuit is the same for each resistor in a series circuit and is equal to the applied voltage divided by the equivalent resistance: \[I = \frac{V}{R_{S}} = \frac{9 \, V}{90 \, \Omega} = 0.1 \, A. \nonumber\] Note that the sum of the potential drops across each resistor is equal to the voltage supplied by the battery. Find the value of the resistance of the resister: (a) 5000 Î© (b) 400 Î© (c) 0.8 Î© (d) none of these 19. When a 40V battery is connected across an unknown resistor there is a current of 100 mA in the circuit. When a 40V battery is connected across an unknown resistor there is a current of 100 mA in the circuit. This property helps conductor in opposing the flow of current through it. Find the value of the resistance of the resister: (a) 4000 Î© (b) 400 Î© (c) 0.4 Î© (d) 40Î© 7. Identify the circuit in which the electrical components have been properly connected. Find the value of the resistance of the resistor. Ans:We have potential difference (V) = 12V Electric current (I)=2.5 mA= 2.4×10-3 When the battery is connected across a 20.0 Î© load resistor, the terminal voltage of the battery 8.50 V. A battery provides a voltage of 10.0 V and has unknown internal resistance . Q.8:- When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. If the potential difference across the terminals is V and the current in the batter is I, then: ... A total resistance of 3.0 ohms is to be produced by combining an unknown resistor R with a 12 ohm resistor. Question 9. 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