An engineer built the circuit depicted in the figure. Assuming  = 8.40 V and R = 4.90 Ω.  What is the magnitud (mA) of  the current in the 2.00 Ω resistor and what is the potential difference (in V) between points a and b (Vb − Va)?

A battery has an emf of ε = 19 V, an internal resistance r = 28 22, and is connected to a resistor of R = 75 22. Express the current I through the circuit in terms of ε, r and R. Calculate the numerical value of I in A. Express the terminal voltage 4V of the battery in terms of I and R. Calculate the numerical value of 4V in V.

Consider the circuit shown in the figure below. (Assume R₁ = 14.0 and R₂ = 7.50 .) b 25.0 V R₁ R₁ Submit Answer a R₂ (b) Find the current in the 20.0-0 resistor. A R₂ C (a) Find the potential difference between points a and b. V 20.0 Ω ℗

The 10 Ω resistor in (Figure 1) is dissipating 36 W of power.   How much power is the 5.0  Ω resistor dissipating? Express your answer with the appropriate units. How much power is the 20  Ω resistor dissipating? Express your answer with the appropriate units.

An ammeter is connected in series to a battery of voltage V_b and a resistor of unknown resistance R_u (Figure 1). The ammeter reads a current I_0. Next, a resistor of unknown resistance R_r is connected in series to the ammeter, and the ammeter's reading drops to I_1. Finally, a second resistor, also of resistance R_r, is connected in series as well. Now the ammeter reads I_2. If I_1/I_0=4/5, find I_2/I_0

Consider the circuit, as shown in the figure above. R1 = 10.0 ohm, R2 = 11.0 ohm, R3 = 4.00 ohm, R4 = 5.00 ohm, R5 = 21.0 ohm and V = 26.0 V. Calculate the magnitude of the current in the R5 = 21.0 ohm resistor. Calculate the magnitude of the potential difference between points a and b.

The following equations describe an electric circuit. −I1(247 Ω) + 5.80 V − I2(381 Ω)  =  0 I2(381 Ω) + I3(150 Ω) − 3.10 V  =  0 I1 + I3 − I2  =  0 Calculate the unknowns (in mA). With respect to the 5.8 V battery, consider current moving toward the positive pole as positive and current moving toward the negative pole as negative. THE FOLLOWING GIVEN ANSWERS WERE INCORRECT: I1= -10.008 mA I2= -0.868 mA I3= 0.139 mA

Voltage (volts) current (mA) 3.00 10.0 6.00 20.0 9.00 29.5 12.00 40.0 1A= 1000 mA Plot a graph of Voltage (y-axis) vs. Current (x-axis.) Draw the straight line of best fit through the points and determine the slope of the line. What is the resistance of the unknown resistor? Answer choices:     a) 0.3 ohms b) 30 ohms c) 3 ohms d) 300 ohms e) 333 ohms

Problem 5: A current of I- 2.6 A passes through the circuit shown, where R- 65 3R 5R V) 2R 6R 2R 7R 5R 10R Otheexpertta.com Part (a) In terms of R, I, and numeric values, write an expression for the voltage of the · source, V. Part (b) What is the voltage, V in volts? tan( sin() cotanO a acos cosh0t cosO asin() acotan 4 5 6 sinh() cotanhO *1 23 0 tanh0c O Degrees O Radians CLEAR BACKSPACE

In (Figure 1), R1R1R_1 = 3.00 ΩΩ, R2R2R_2 = 7.00 ΩΩ, and R3R3R_3 = 4.00 ΩΩ. The battery has negligible internal resistance. The current I2I2 through R2R2 is 3.00 A . What is the emf of the battery? Express your answer with the appropriate units.