Related Questions

The total resistance for two resistors in parallel is equal to the sum of the two resistors.
A True
B False
Three identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be
A 9 times
B $$\frac{1}{9}$$ times
C $$\frac{1}{3}$$ times
D 3 times
সিরিজে সংযুক্ত একটি এ্যামিটার এবং একটি অজানা রোধ দুটি একই রকম 1.5 V ব্যাটারীর দুই প্রান্তে সংযুক্ত আছে। যখন ব্যাটারী দুটি সিরিজে সংযুক্ত থাকে তখন এ্যামিটার। amp রিডিং প্রদর্শন করে। আবার ব্যাটারী দুটি সমান্তরালে সংযুক্ত করলে 0.6 amp রিডিং প্রদর্শন করে। ব্যাটারীর আভ্যন্তরিন রোধ কত ? (An ammeter and an unknown resistance are connected in series across two identical batteries of each 1.5 V. The ammeter shows current I amp and 0.6 amp when the batteries are connected in series and parallel, respectively. What is the internal resistance of the battery?)
A 13Ω
B 12Ω
C 1Ω
D 0.1Ω
E 23Ω
Rahim has invited his three buddies over to watch the basketball game on his wide-screen television. They are all hungry, but no one wants to leave to get food. Just as they are arguing about who should make the food run, a commercial comes on for a local pizzeria that delivers. The phone number flashes on the screen briefly and they all try to remember it. By the time Zachary grabs a pen and paper, each of them recollects a different number.i. All of the men agree that the first three numbers are 995.ii. Three of them agree that the fourth number is 9.iii. Three agree that the fifth number is 2.iv. Three agree that the sixth number is 6; three others agree that the seventh number is also 6.Which of the numbers is most likely the telephone number of the pizzeria?
A 995-9266
B 995-9336
C 995-9268
D 995-8266
The total resistance of a series circuit is equal to the difference between the largest and smallest value resistors.
A True
B False
What is the effective resistance (in Ω) of two resistors 20 Ω and 30 Ω connected in parallel?
A 50
B 12
C 24
D 36
Addition of resistors in parallel increases total resistance and decreases total current.
A True
B False
A capacitor and a resistor are connected in series to a sine wave generator. The frequency is set so that the capacitive reactance is equal to the resistance and, thus, an equal amount of voltage appears across each component. If the frequency is increased
A VR > VC
B VC > VR
C VR = VC
D VR and VC = 0
When an additional resistor is connected across an existing parallel circuit, the total resistance
A Remains the same
B Decreases by the value of the added resistor
C Increases by the value of the added resistor
D Decreases
When a number of resistors are connected in series in a circuit, the value of current:
A increases
B becomes half
C decreases
D remains the same

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