In the ohmmeter of Fig, the coil of the meter has resistance Rc = 15.0 and the

In the ohmmeter of Fig, the coil of the meter has resistance Rc = 15.0 Ω and the current required for full-scale deflection is Ifs = 3.60 mA. The source is a flashlight battery with E = 1.50 V and negligible internal resistance. The ohmmeter is to show a meter deflection of one-half of full scale when connected to a resistor with R = 600 Ω. What series resistance R. is required?