Why is it not necessary to connect a voltage source (like a cell or battery) across a resistor when measuring resistance? Determine the resistance for each of the following resistor color codes: Red- Red-Brown-Gold b) Orange-Orange-Orange c) Yellow-Violet-Red-Silver d) Brown-Black-Yellow Identify the color code for each of the following resistance values: 150 10 c) 720 k 5% 56 k 20% d) 20 5% Sketch a diagram showing the ohmmeter face for a reading of 1.2 k. Indicate the setting of the multi-tester knob. A resistor is connected in series with an ammeter and the combination to the terminals of a 4.5-volt battery. Across the resistor is a voltmeter. Determine the ammeter and the voltmeter reading for each of the values of the resistor. a) 3 , b) 6 , c) 9 , d) 12 , and e) 15. A Physics student performed an experiment on Ohm's Law by using a fixed resistance and the voltage were varied, thus recording the current in each case. From the tabulated results, plot a graph to determine the value of the fixed resistance