When using an ammeter to measure current: Group of answer choices open the circuit at the positive and negative terminals of the battery. open the circuit and connect the meter in series between the two open ends. open the circuit at one point and connect the meter to one end. connect the meter across the battery or load.

The figure below shows a battery connected to a circuit. The potential difference across the battery and the resistance of each resistor is given in the figure. 25.0 V 10.5 Ω 10.5 Ω 4.00 Ω 4.00 Ω 20.0 Ω A rectangular circuit begins at its left side at a 25.0 V battery with the positive terminal on top. From the battery, the circuit extends up and to the right to point b. The circuit continues rightward from point b and splits into three parallel vertical branches. The leftmost branch has a resistor labeled 10.5 Ω, the middle branch has a resistor labeled 4.00 Ω and the rightmost branch, from top to bottom, goes through a resistor labeled 4.00 Ω, point c, and a resistor labeled 20.0 Ω. The three branches recombine, the circuit extends to the left passing through point a, bends upward to a resistor labeled 10.5 Ω and reaches the negative terminal of the battery. (a) What is the magnitude of the potential difference (in V) between points a and b in the circuit?   (b) What is the…

6.0 V 9.0 V 1.0 Ω 1.0 2 Batteries a b R

Which statements are true? a) At any junction point in a circuit, the sum of all the currents entering the junction must equal the sum of all the currents leaving the junction. b) The sum of the changes in potential around any closed loop of a circuit must equal zero. c) Kirchoff's junction rule is based on the conservation of energy. d) Kirchoff's loop rule is based on the conservation of charge.