(i) element 1. Is the cause of electrical current formation in circuits, while the power supply is the provision of the device . The symbol of the voltage, in units of , abbreviations, a symbol of , and units of , etc. A section of dry battery voltage is v, mobile cell battery voltage is v and our home circuit voltage is v. The instrument for measuring the voltage at both ends of the circuit is . 5. Three wiring columns, two quantities, of the voltage table. (1) when using the two poles "i, 3" the scale range is , the fractional value is . (2) if two poles are used, the scale range is , the fractional value is . 6. Rules for the use of voltage meters. (1) the voltage table shall be at either end of the detected circuit. (2) the current flowes from the relay column of the voltage table and from the relay column. (3) do not exceed . (4) power voltage is detected on the positive or negative poles of the power received directly from the voltage table (capable, incapable of). The voltage relationship of the serial circuits is expressed in formulae as the voltage relationship of the circuits is expressed in formulae as follows: 1. (the datehold) as shown in the figure, l1 and l2 are the same small light bulbs, a, b are current or voltage meters. After closed switch s, if both lamps are luminous, then() a. A., b. Are electrical meters b. A. And b. Are voltage meters c. A., b. Voltage meters d. A., voltage tables, b. Electrical flow list question 1 3. Regular knowledge point classification and training point 1. 1: understanding the concept of voltage [t] the following statement is correct: () a. There's a large free charge in current b., if there's a voltage on the circuit, and there's a current c. Voltage in the circuit conductor, which is required for current. 1. The power source works constantly with the positive polar charge, the negative pole charge the negative charge, and maintains a certain voltage at both ends of the circuit, which allows the free charge to occur in the circuit, thus forming in the circuit, so that it is a device to provide the voltage. 2. Birds that fall on high pressure lines are not electrocuted to death because () a. The horny layer on bird claws is insulated b. Birds have a stronger capacity to withstand currents with c. Birds ' feet on the same steering line, and d. High pressure lines have a rubber exterior point of 3. 3: a series of combined voltage experiments and patterns [colleges] (guillin) are on the circuits as shown in figure a. When s is closed, the readings of the voltage table at the l-1 end are v. Case question # 2 [practice # 1]. (practice # 2) as shown in the graph, when searching for patterns of voltage in a chain of circuits, small rain students measure at ab, bc, ac at the end of a voltage table, respectively, at uab = 3v, u bc = 3v, u ac = 6v, after recording the data in the table, the next step should be () a. Packing equipment, analysing the data to conclude that b. Alters the position of l1 and l2 by the magnitude of b., of which the correct set of voltage values c. 2 is (a. 15v, lv, lv, lv, lv, lv, lv, lv , v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v
