When two linear resistors are connected in parallel, R1: R2=1:2, and the total current of the two resistors is 6A, the current flowing through the resistor R2 is ( ).
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1.When two linear resistors are connected in parallel, R1: R2=1:2, and the total current of the two resistors
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2.When using zener diodes, current limiting resistors are not required.
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3.(B1)两个电阻R1和R2并联的等效电阻为( )。A、1 /R1 1/ R2B、R1 R2C、(R1* R2 ) /( R1 R2)
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4.In the circuit shown in the following Figure .When the resistance R2 increases, the current I will( )
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5.When a transistor is in saturation, the total collector current is limited by ______
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6.如图的电路中,已知ε1=1.0V,ε2=2.0V,ε3=3.0V,r1=r2=r3=1.0Ω,R1=1.0Ω,R2=3.0Ω。试求:
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7.已知R1=2Ω,R2=3Ω,R3=6Ω,将R2、R3并联后与R1串联,R1上电压为6V,则R2上电流为:( )
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8.已知r1=r2,那么( )
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9.已知r1=r2,那么( )。
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10.设R1,R2是集合A={a,b,c,d}上的两个关系,其中R1={,,,},R2={,,,,},则R2是R1的()闭包